package exception.part2;
/**
 * 如何自定义异常类？
 * 1. 继承于现有的异常结构：RuntimeException 、Exception
 * 2. 提供全局常量：serialVersionUID
 * 3. 提供重载的构造器
 * 
 */
public class MyException extends Exception{

  static final long serialVersionUID = -7034897193246939L;

  public MyException() {}

  public MyException(String msg) {
    super(msg);
  }
}
